Your donations help keep this valuable resource free and growing. Thank you.
|
304 on the dyno |
Post Reply | Page <1 23456 7> |
Author | |
Trader
AMC Addicted Joined: May/15/2018 Location: Ontario Status: Offline Points: 6881 |
Post Options
Thanks(2)
|
Yes, but your building for the customer, that I understand.
So as of today, the 304 is now the hot 360 and the 360 is the bolt on upgrade 401. I find it exceptional that you have shared the details of your builds with the few AMC followers left. I thank You. |
|
Mopar_guy
Supporter of TheAMCForum Joined: Jun/07/2009 Location: Ohio Status: Offline Points: 4826 |
Post Options
Thanks(0)
|
When you pay him to build one! I'm sure he would be happy to do so but he doesn't work for free.
|
|
"Hemilina" My 1973, 5.7 Hemi swapped Javelin |
|
jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
Post Options
Thanks(0)
|
An engine like this does not come easy, it takes a lot of knowledge, time, money, good parts and precision work. The engines I build are blueprinted, with a lot induction work, attention to every detail, and an emphasis on making great power within the parameters given.
I was told by a multi winning Engine Masters competitor that a good measure of an engine is the rpm range where the torque is within 10% of the peak torque. He said if it carries for 2K that is a good engine. This engine is within 10% from 2800 rpm's to the end of the pull which is excellent. This is a good little street engine.
|
|
Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
|
ADAM12MATADOR
AMC Addicted Joined: Dec/03/2011 Location: New City, N.Y. Status: Offline Points: 518 |
Post Options
Thanks(0)
|
Nice build. I actually have a Popular Hot Rodding Engine Challenge 401 that i need freshened up.
|
|
EVF_Sportabout
AMC Apprentice Joined: Oct/04/2018 Location: Colorado Status: Offline Points: 199 |
Post Options
Thanks(1)
|
I just want to thank John for all of his effort on this build. The dyno results speak for themselves. He truly is THE AMC engine specialist! He listened to me and used those conversations to build an engine based on what I needed it to do. The cylinder head work and intake porting and experience custom grinding CAMs were indeed the magic sauce that made this little 304 special! He is a great honest guy that can really make red white and blue power!
|
|
Sonic Silver
Supporter of TheAMCForum Joined: Nov/23/2011 Location: East Tennessee Status: Offline Points: 7949 |
Post Options
Thanks(1)
|
|
|
jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
Post Options
Thanks(2)
|
Very kind words, thank you
I am not going to lie, there is a customer or two where the communication was lacking and things did not go as well. Probably not a good thing to say about myself but I would be lying if I said things always work out perfectly. One thing I can say is, in every case a top notch product was delivered in the end.
|
|
Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
|
Greyhounds_AMX
AMC Addicted Joined: Nov/14/2009 Location: Kansas City Status: Offline Points: 1268 |
Post Options
Thanks(0)
|
John, how much is a custom hydraulic flat tappet cam from Bullet? Just as a reference point for everyone.
|
|
1968 AMX 390 w/T5
|
|
jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
Post Options
Thanks(0)
|
203 plus shipping for a typical American V8 iron flat tappet cam
|
|
Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
|
Trader
AMC Addicted Joined: May/15/2018 Location: Ontario Status: Offline Points: 6881 |
Post Options
Thanks(0)
|
I cannot get an off the shelf cam for that price!
Just out of curiosity John, I plugged the 304 build into my obscure formulas; I get your build for a 4200 RPM center, and this produces a maximum torque (cylinder pressure) at 22 degrees ATDC. By no means knocking your work, I wish I had the knowledge, experience and TOOLS! Your intake open and close match closely to my calculations for best cylinder charge. My calculations bring me to reducing the duration of the exhaust by 4 degrees, showing it would pick up 4 ftlbs of torque and 6 to 8 HP. This is of course on paper and not the real world. Would very much like to see how you came up with your custom grind! Are you calculating by peak cylinder pressure and fall off pressure number? Am I also correct in that this is for an automatic transmission with a higher then stock stall converter? Edited by Trader - Mar/06/2019 at 4:52pm |
|
Post Reply | Page <1 23456 7> |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |